Re: Concrete permeability

[Rick Lucertini <empiricus@sprint.ca>]

DaveIrons@aol.com wrote:

> Rick Lucertini said:
>
> >     A few thoughts on concrete....   It may be the perfect material
> >for a habitat, but would it's lower impact resistance make it
> >suitable for a submarine?
>
> >If I walk up to a steel hull and whack it with a hammer, I can be
> >pretty confident it's not going to crack--how well would these
> >concrete hulls stand up to a blow?
>
> >Hull penetrations seem like a real nuisance to design (since it's
> >going to be harder to get a seal against concrete than steel.)   The
> >idea of concrete hulls is intriguing, but I'm a little paranoid about
> >how unproved the technology seems to be.  Is the cost savings
> >really that compelling?

Hi, David -

Now, I've been accused of saying a lot of things, much of it from fantasyland!

But, for the record, the above words of wisdom belong to someone else!

8~D


--
Rick Lucertini
empiricus@sprint.ca
(Vancouver, Canada)